well basically my daytime temerature is about 27 degrees celcius or about 80 degrees f. at night my room drops to about 21 c or 70 f. thats with 2 small electric heater on at night. my room is larger than necessary too, about 16 feet long and 9 or 10 feet wide. basically i need a really efficient way to heat my room at night because soon my 2 electric heaters arent going to cut it. I also estimate that my room will drop to about 18 degrees c or 65 f if i weren't using my current heaters.